We have a large ASP (classic ASP) application and we would like to convert it to .NET in order to work on further releases. It makes no sense continuing to use ASP as it is obsolete, and we don't want to rewrite it from scratch (Joel Spolsky tells you why).
Is there a way to convert it from ASP to ASP.NET automatically?
Well, I used to work for the company where all web apps were classic ASP. When decision was made to move to .NET we had to find a way to transform 168(!) web apps into this new framework. I tried all the tools available at the time to do this and all failed.
Best way is to build a new web server and start there from scratch, this way you can be sure that upgrade will happen fast and will work without any hick-ups because of old-new integration. You will be able to choose what functionality and visual appearances to keep and which one to change. Do not waste your time on automatic tools to upgrade your old ASP files/sites into NET platform. None so far have ever worked properly.
And on top of that if you have database on back end, you will run into problem with connection to it from web apps.